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意大利斯尼亚公司的H2S,CS2废气治理技术 总被引:7,自引:0,他引:7
介绍了意大利斯尼亚公司对粘胶纤维生产厂的废气治理技术。方法有:生物处理技术;常规催化氧化处理技术,可再生的从化氧化处理技术。这些处理技术可分别处理不同浓度的废气,特别是生物处理技术适合低浓度废气的处理,最低处理浓度可达300~300mg/m^3。 相似文献
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本文介绍了一种工业废酸液的处理技术.该技术不但能够使废酸液达到零排放,而且可以利用酸液中含有的离子生产铁系无机颜料和硫酸铵产品。 相似文献
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根据各种尾气处理方法的适应范围,结合生产规模的大小,适当选择不同的处理方法,以提高硫回收率,获取较好的经济效益。 相似文献
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将炼厂污水处理过程中的“三泥”经预处理、混凝、离心脱水处理后作为焦化装置部分原料参加反应进行处理,以产品形式出装置,实现了变废为宝。通过此次的研究,为炼厂污水处理过程中“三泥”的治理提供了切实可行的技术路线和宝贵的经验,解决了炼油化工企业“三泥”治理的难题。 相似文献
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对工业企业的生活污水与工业污水混合处理的工艺技术设计了典型的工艺流程,提出了相关主要工艺参数,并进行了工业化生产应用研究试验,应用研究结果表明,对已经建有用活性污泥法处理工业污水设施的企业,可采用生活废水与工业废水混合处理的技术,同时实现生活污水和工业废水的达标排放,且投资少,运行费用低廉。 相似文献
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我国硫酸工业环境污染概况及其防治途径的建议 总被引:2,自引:0,他引:2
本文叙述了我国硫酸工业环境污染的基本状况。介绍了近十多年来国内外硫酸工业在尾气处理、废水治理及烧渣利用方面所取得的技术进展。指出了我国硫酸工业的环保技术措施与国外的差距。结合国情提出了防治我国硫酸工业环境污染的四点建议:1.普及两转两吸或一转一吸加尾气处理技术;2.精料政策,使烧渣作为炼铁原料;3.推广各种酸洗净化工艺;4.开展“三废”治理新技术的研究。 相似文献
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本文提出了一种工业氧化铝原料的处理新工艺;在工业氧化铝原料中添加表面活性剂进行研磨处理,再经1100℃温度煅烧,使得原料中γ-Al2O3完全转化为α-Al2O3,且粉料的颗粒大小在1μm以下。 相似文献
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作为一种新型的水处理技术,超声波在有机废水处理中的应用研究受到越来越多的人的关注。文章综合介绍了声解机理、降解效果、影响因素以及超声波技术在废水处理中的应用及研究进展。 相似文献
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活化过硫酸盐高级氧化技术用于降解水体中有机污染物备受关注,其中采用过渡金属活化过硫酸盐降解有机污染物的研究越来越多,也取得了良好的效果。本文综述了近几年来国内外利用以过渡金属为基础的催化剂活化过硫酸盐降解污染物的应用研究;阐述了贵金属催化剂、单金属催化剂、复合金属催化剂(尖晶石结构催化剂、纳米核壳结构催化剂、三维纳米结构催化剂)在水体中降解有机污染物的研究进展;探讨了过渡金属催化剂的优缺点和研究现状,最后提出了该活化体系目前面临的问题,期望为过渡金属活化过硫酸盐降解污染物技术的应用提供参考。 相似文献
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Njud S. Alharbi Baowei Hu Tasawar Hayat Samar Omar Rabah Ahmed Alsaedi Li Zhuang Xiangke Wang 《Frontiers of Chemical Science and Engineering》2020,14(6):1124
With the rapid development of industrial, large amounts of different inorganic and organic pollutants are released into the natural environments. The efficient elimination of environmental pollutants, i.e., photocatalytic degradation of persistent organic pollutants into nontoxic organic/inorganic chemicals, in-situ solidification or sorption-reduction of heavy metal ions, is crucial to protect the environment. Nanomaterials with large surface area, active sites and abundant functional groups could form strong surface complexes with different kinds of pollutants and thereby could efficiently eliminate the pollutants from the aqueous solutions. In this review, we mainly focused on the recent works about the synthesis of nanomaterials and their applications in the efficient elimination of different organic and inorganic pollutants from wastewater and discussed the interaction mechanism from batch experimental results, the advanced spectroscopy techniques and theoretical calculations. The adsorption and the photocatalytic reduction of organic pollutants and the sorption/reduction of heavy metal ions are generally considered as the main methods to decrease the concentration of pollutants in the natural environment. This review highlights a new way for the real applications of novel nanomaterials in environmental pollution management, especially for the undergraduate students to understand the recent works in the elimination of different kinds of inorganic and organic chemicals in the natural environmental pollution management. 相似文献
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Fenton法是一种高级氧化技术,具有反应快、易操作、氧化速率较高等优点,主要应用于降解废水中有毒或难降解的有机物。近年来关于Fenton及类Fenton反应的研究日益增多。综述了近年来有关Fenton及类Fenton反应泡括Photo—Fenton和光/H2O2/草酸铁络合物体系)的研究进展。一方面,介绍了Fenton、Photo—Fenton和光/H2O2/草酸铁络合物体系的反应机理及影响氧化效果的主要因素;另一方面,由于Fenton反应能产生大量氧化能力强的羟基自由基,可以作为引发剂应用到聚合物合成中。对Fenton及类Fenton反应在聚合物合成领域的应用进行了总结。最后,对Fenton及类Fenton反应在聚合物合成领域的应用前景进行了展望。 相似文献
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抗生素类药物是目前水环境中出现的一类新兴有机污染物,具有难自然降解、环境刺激性、生物毒性及耐药性等特点,高效去除抗生素类污染物是近年来环境工作者重点探讨的内容。掺硼金刚石(boron-doped diamond,BDD)电极由于自身优异的物理和化学性质,被认作为目前电催化氧化水中有机污染物最为理想高效的阳极材料,但关于BDD阳极在新兴抗生素类污染物的研究情况尚未进行及时的总结。本文首先论述了BDD阳极在电催化氧化有机污染物的降解过程和基于强氧化性物种的电催化氧化机理,进而分析了BDD阳极在电催化降解水中新兴抗生素类污染物的研究进展,探讨了影响抗生素类污染物电催化降解过程的关键影响因素,总结了BDD阳极材料的开发情况,同时,总结了以BDD阳极电催化氧化为基础发展而来的其他水处理联合方法,最后,进一步展望了BDD阳极在未来电催化降解抗生素类污染物存在的问题及未来的重点发展方向。 相似文献
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Robert S. Boyd 《Journal of chemical ecology》2010,36(1):46-58
Heavy metals are an important class of pollutants with both lethal and sublethal effects on organisms. The latter are receiving
increased attention, as these may have harmful ecological outcomes. For example, recent explorations of heavy metals in freshwater
habitats reveal that they can modify chemical communication between individuals, resulting in “info-disruption” that can impact
ecological relationships within and between species. Info-disruption can affect animal behavior and social structure, which
in turn can modify both intraspecies and interspecies interactions. In terrestrial habitats, info-disruption by metals is
not well studied, but recent demonstrations of chemical signaling between plants via both roots and volatile organic molecules
provide potential opportunities for info-disruption. Metals in terrestrial habitats also can form elemental plant defenses,
in which they can defend a plant against natural enemies. For example, hyperaccumulation of metals by terrestrial plants has
been shown to provide defensive benefits, although in almost all known cases the metals are not anthropogenic pollutants but
are naturally present in soils inhabited by these plants. Info-disruption among microbes is another arena in which metal pollutants
may have ecological effects, as recent discoveries regarding quorum sensing in bacteria provide an avenue for metals to affect
interactions among bacteria or between bacteria and other organisms. Metal pollutants also may influence immune responses
of organisms, and thus affect pathogen/host relationships. Immunomodulation (modification of immune system function) has been
tied to some metal pollutants, although specific metals may boost or reduce immune system function depending on dose. Finally,
the study of metal pollutants is complicated by their frequent occurrence as mixtures, either with other metals or with organic
pollutants. Most studies of metal pollutants focus on single metals and therefore oversimplify complex field conditions. Study
of pollutant impacts on chemical ecology also are difficult due to the necessity of studying effects at varying ecological
scales: “dynamic scaling” of chemical ecology studies is rarely done completely. It is clear that much remains to be learned
about how heavy metal pollution impacts organisms, and that exciting new research frontiers are available for experimental
exploration. 相似文献